femtogram

the scientist measured the sample in femtograms.

one femtogram is one quadrillionth of a gram.

femtogram levels of pollutants can affect health.

researchers can detect femtogram quantities of dna.

the device can measure weight down to femtograms.

femtogram precision is crucial in nanotechnology.

they reported a femtogram increase in the substance.

in the lab, they worked with femtogram samples.

measuring femtograms requires advanced technology.

femtograms are often used in pharmaceutical research.